public void DeleteContact(int AthleteID, int contactid)
        {
            if (AthleteID == 0)
            {
                return;
            }

            // existing athlete

            Athlete Athlete = getAthlete(AthleteID);

            if (Athlete == null)
            {
                return;
            }

            AContactDetail detail = Athlete.getAllContacts().Where(c => c.ID == contactid).First();

            Athlete.removeContact(detail);
        }